Type-bar bracket.



Patented ,Aug. 22, I899.

C. SPIBU.

TYPE BAR BRACKET.

(Application filed Oct. 31, 1898.)

JT M

(No Model.)

UNIT D STATES PATENT OFFICE.

CHARLES SPIRO, OF NEW? YORK, N. Y.

TYPEi-BAR B RACKET.

SPECIFICATION forming part of Letters Patent No. 631 ,412, dated August22, 1899. Original application filed April 9, 1897, Serial No. 631,437.Divided and this application filed October 31, 1898. Serial No.

T0 aZZ whom/it may concern.-

Be it known that I, CHARLES SPIRO, a citizen of the UnitedStates,residin g at New York, in the county'of New York, State of NewYork, have invented .certain new and useful Improvements in Type-BarBrackets, of which the following is a specification, reference being hadtherein to the accompanying draw-i ings.

This invention relates to improvements in type-writers, and particularlyto a type-bar bracket disclosed in my prior application, Se- I rial No.631,437, filed April-9, 1S97,-of which this application is a division.

The object of the invention is to improve the construction of type-barbrackets and bearings and to facilitate the adjustment of the latter inposition in a complete machine that is, when located closely adjacent toother brackets.

Other objects and advantages of the invention will hereinafter appear inthe following description,and the novelfeatures thereof will beparticularly pointed out in the appended claims.

In the drawings, Figure 1 is a detail plan view illustrating the angulararrangement of the type-bars. Fig. 2 is a side elevation of one of thebrackets. Fig. 3 is an end elevation with parts in section. Fig. 4 is atop plan of a bracket. Fig. 5 is a detail perspective of the tool foradjusting the cone-bearings of the brackets, and Fig. 6 is a bottom planof the bracket and type-bar pivots with the base of the bracket removed.

Like letters of reference indicate like parts throughout the severalfigures of the drawings.

The letter A represents the key-levers of a type-writer,which aresuitably connected with the type-bars O, which bars are mounted ingroups in brackets D. Each type-bar is provided with atransversebearing-shaft O, the ends of which are coned, as shown, andtake bearing at one end in the wall of a bracket D and at the other endin acone-bearing E, screw-threaded in the opposite wall of the bracket.The bearing E is slotted, as at E, for the reception of a lever F, oneend of which is tapered to fit the slot E, as at F, and the other end ofwhich tool is tapered and bent,

No model.)

within the slot when the same is inaccessible to the opposite end F byreason of the position of the slot. In the completed machine thetogether, rendering it difficult to get access to the adjustablebearingof the type-bar. Now by providing the cone-bearing with one ormore slots or grooves the same is accessible for the operation of a toolfor adjusting the bearing; but the bearings being so closely assembledin the machine the tool must necessarily be thin, and therefore ifentered in the slots fiatwise it would readily bend, but being taperedand entered edgewise greater strength is given to the tool, while at thesame time accessibility to the parts is retained.

The base of the bracket is provided with two lugs D and;an aperture Dfor the reception of the bracket-retaining'screw D Fig. 1, by which thebrackets are secured to the bridge G, the lugs D resting in the groove Gof the bridge. of the bracket to perform the function of the lugs B, Iform them by forcing down the depressions D as shown by dotted lines inFig. 3. This gives a cheaper and stronger construction than forming thelugs of separate pieces.

To prevent the spreading of the walls of the bracket in an adjustment ofthe type-bar bearings, I employ a screw-threaded tie-bar D which isthreaded into the walls at each end, cut 0% flush with the outer surfaceof each wall, and then is set against withdrawal and against rotation bythe formation, with any suitable tool, of a depression D extendingacross the rod and for a distance beyond the same into the surface ofthe wall, as clearly illustrated in Fig. 4. This depression Dnecessarily mars the threads in the wall and on the rod, thereby lockingthe latter against rotation, while the adjacent threads, seated in thewall, prevent the spreading of the walls. This construction ispreferable to countersinkiug the outer faces of the walls and rivetingor upsetting the ends of the tierod within the countersink, as this workhas a tendency to bend the rod or otherwise throw the walls out ofparallelism. The screw as at E to fit the slot E and to be placedtype-bar brackets are arranged very closely Instead of inserting pins inthe base metal of the base by suitable dies, forming threaded rodspermit easier, more accurate, and cheaper assembling of the parts.

In referring again to the type-bar bracket D it will be noticed, moreclearly in Fig. 1, that the shafts C of the several type-bars mounted ina single bracket are arranged out of parallelism with each other. Theobject of this arrangement is to bring the type of each of the threebars assembled in a single bracket to one common printing-point. Theshaft of the central bar is practically parallel with the base of thebracket, while the shafts of the other bars are at an angle to avertical line bisecting the base parallel with the side walls of thebracket.

'lhetype-bars and brackets constituting the complete series employed ina machine will be so disposed by the location of their shafts that thebars will be brought between the proper pins W of the bar-lock V of themachine. By this construction less dependence is placed upon thesidewise springing of a type-bar when it enters the bar-lock and heaviermaterial may be employed by the bar. The provision of an embossedprojection upon the bracket forms an integral rigid projection forholding the bracket in proper position, so that it cannot be bent out ofits proper alinement. The threaded tie-bar used likewise holds the wallsof the bracket in positive alinement irrespective of the adjustment ofthe bearings, which is accomplished entirely through the cones. Thesecone-bearings are nested very closely together, and the plurality ofslots at an angle to each other provided therein permits the insertionof a tool at any position in which the slot may stand and the consequentconvenient and rapid adjustment of the bearings whenever necessary.

It is obvious that changes may be made in the details of constructionand configuration of the several parts without departing from the spiritof this invention as defined by the appended claims.

What I claim is- 1. A type-bar bracket having integral walls extendingat an angle to an apertured base, the material of which base is embossedto form depressed lugs; substantially as specified.

2. A type-bar bracket provided with a tiebar screw-threaded at each endinto the wall of the bracket and secured against rotation by adepression in the end of the bar; substantially as specified.

3. A tie-bar for a type-bar bracket screwthreaded in one directionthroughout its length; substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

- CHARLES SPIRO.

\Vitnesses:

MICHAEL P. CORRIGAN, HENRY LEsINsKv.

